MalwarePIIIdentity (basic)LowActive

InFirst Bank

bd_c699fb642cfa82b1 · schema v1 · pii pii-v1

Severity

Low

Discovered

Oct 22, 2020

Filed

Dec 4, 2020

To disclose

6 weeks

Affected

16state residents only

Linked

5 filings

Confidence

67%

Full breach record for InFirst Bank →

American Bank Systems (ABS) notified InFirst Bank customers in Montana of a cyber incident discovered on October 22, 2020. Malware infected ABS systems, leading to unauthorized access to customer documents containing PII. ABS engaged forensic specialists, reset passwords, and offered credit monitoring.

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Incident timeline

discovery → filing · 6 weeks / 43 days

Oct 22, 2020

Discovered

Dec 4, 2020

Filed

This filing is one of 5 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Indiana State AGbd_188ea72141eb819b2020-12-18 · +14dVerified
Maine State AGbd_3e8ff1e62062f5952020-12-18 · +14dVerified by operator
Massachusetts State AGbd_87d8e992b12675e92020-12-18 · +14dVerified
New Hampshire State AGbd_e44a163afbe156692020-12-30 · +26dVerified

Name: American Bank Systems
norm: american bank

Name: InFirst Bank
norm: infirst bank

Discovered: Oct 22, 2020
Materiality determined: —
Notification sent: —
Affected individuals: 16state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1119 Automated Collection
Threat actor: ExternalFinancial

During the incident: Took systems offline
Launched an investigation
Engaged third-party computer forensic specialists
Resetting ABS user passwords
Offering credit monitoring and identity theft protection services through TransUnion
Changes made: Reviewed existing security policies
Implemented advanced endpoint monitoring
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(43 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Montana State AGDec 4 · first · this page

Indiana State AG+14d

Maine State AG+14d

Massachusetts State AG+14d

New Hampshire State AG+26d

Pattern: first filing Dec 4 (MT), last Dec 30 (NH) — a 26-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://dojmt.gov/wp-content/uploads/infSamp.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 4, 2020
Raw hash: 92fb0337c75dfabfb2176b1f2041a16ed18e32bbfc4be2467692a7f371e94f22

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityAmerican Bank Systems

Victim entityInFirst Bank

Incidentdiscovered Oct 22, 2020

Stated responseTook systems offline

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov